How it converts

Superb versatility offers limitless possibilities. No matter what converting method you have in mind, Polyart® is ready to go to work for you. It can easily be scored, folded, perforated, varnished, foil blocked, stitched and more, using standard converting equipment.

Finishing

All internal corners should be radiused, since a sharp notch will greatly reduce the initial tear resistance of the material. The cutting tools must be kept sharp to produce a clean cut.

Guillotining

Blades should be kept sharp, and because of the compressibility of the material, light clamping pressures should be used.

Die-Cutting

We recommend the use of hard steel rules.
All internal corners should be radiused (a sharp notch greatly reduces tear resistance). Where a retention point is required, we recommend this should be kept as small as possible to prevent risk of initiating tearing.

Perforating

Can be sprocket-punched or perforated.
Keep hole punches sharp and clean. Perforation slots should be long, with very short ties.
Always test perforations and make sure perforation is running off the sheet, so tearing is initiated more easily.

Drilling, Punching & Cornering

Keep cutting tools sharp and clean.

During drilling and cornering, it is important that a short dwell time is used in order to eliminate heat generation, which may cause fusion of the edges of the sheets.
For cornering perforation slots should be long, with very short ties.

Folding

Polyart can be folded on normal sheet-folding machines.
Scoring is not necessary for a 16-page signature using 75 gsm (51 lb.) or 90 gsm (61 lb.) weights. Scoring is recommended on heavier weights.

Foil-stamping

Gives good results if heat is kept to a minimum

Stitching

Polyart will stitch easily, even when saddle-stitched and section-sewn

Gluing

For best results, use hot-melt systems (some solvent- and water-based adhesives work well, too)

Advice in this page is based on practical field experience and given in good faith but Arjobex may not be held liable for loss or damage arising from action based on this information.